The Met Department says that the low-pressure area in the South-east Bay of Bengal is located 950km away from the Sri Lanka.

It is likely to develop into a depression during next 24 hours.

“Therefore, wind speed can be increased in the northern and eastern sea area. Showers or thundershowers will occur at times in the sea areas off the coast extending from Potuvil to Kankasanturai via Trincomalee. Showers or thundershowers will occur at several places elsewhere”, the Met Office said.

Winds will be north-easterly to Northerly in the direction of the sea area around the island and wind speed will be 30-40 kmph.

The sea areas 200km off the north-eastern, eastern and south-eastern coasts can be very rough as the wind speed will increase up to 90-100 kmph.

The shallow sea area off the coast extending from Potuvil to Kankesanturai via Trincomalee and Colombo to Matara via Galle can be temporary rough at times as the wind speed can increase up to 60-70 kmph.

Temporarily strong gusty winds (up to 70-80 kmph) and very rough seas can be expected in the sea areas during thundershowers.

The Met Office urged the naval and fishing communities to be vigilant in this regard.